修复MainActivity停止时CameraX NPE崩溃

1. 升级CameraX版本 1.3.0 → 1.4.1，从根本修复RequestWithCallback.abort() NPE
2. 跳转PayActivity前调用shutdownCamera()，防止in-flight拍照请求触发生命周期异常
3. onResume()顶部增加相机恢复逻辑，通过cameraProviderFuture==null判断是否需要重新初始化
4. shutdownCamera()中将cameraProviderFuture置null，作为相机已停止的可靠标志

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/src/main/java/com/sw/dualscreen/activity/MainActivity.kt

@@ -457,6 +457,7 @@ class MainActivity : BaseActivity<ActivityMainBinding>() {
             // 3. 关闭相关资源
             imageCapture = null
             imageAnalysis = null
+            cameraProviderFuture = null
 
             // 4. 停止副屏更新
             isAnalyzing = false
@@ -555,6 +556,10 @@ class MainActivity : BaseActivity<ActivityMainBinding>() {
     override fun onResume() {
         super.onResume()
         isPageVisible = true
+        // shutdownCamera 后 cameraProviderFuture 置为 null，需重新初始化相机
+        if (cameraProviderFuture == null) {
+            setupCamera()
+        }
         // 启动定时器
         handler.postDelayed(timeoutRunnable, TIME_OUT)
 //        ToastUtils.showToast("isPageVisible=$isPageVisible")
@@ -797,7 +802,7 @@ class MainActivity : BaseActivity<ActivityMainBinding>() {
             userId = null,
         ) {
             isRefreshPage = false
-            //presentation?.dismiss()
+            shutdownCamera()
             startActivity(Intent(this, PayActivity::class.java).apply {
                 putExtra(PayActivity.FOOD_INFO, checkedItem!!)
                 putExtra(PayActivity.FOOD_EAT_NUM, eatNum)

gradle/libs.versions.toml

@@ -13,7 +13,7 @@ material = "1.10.0"
 activity = "1.8.0"
 constraintlayout = "2.1.4"
 accompanistPermissions = "0.37.3"
-cameraCore = "1.3.0"
+cameraCore = "1.4.1"
 retrofit = "3.0.0"
 okhttp = "4.12.0"
 timber = "5.0.1"